1. Faculty of Electrical Engineering and Information Technology , Institute of Nuclear and Physical Engineering, Slovak University of Technology in Bratislava, Ilkovičova 3, 812 19 Bratislava , Slovakia
2. Department of Electrical Power Engineering , Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 3082/12, 616 00 Brno, Czechia
3. Vinča Institute of Nuclear Sciences , University of Belgrade, Mike Petrovića Alasa 12-14, 11351 Vinča, Belgrade , Serbia